Molding apparatus



Get. 20, 19 5.

L. A. PALEY MOLDING APPARATUS Filed June 29, 1922 s Sheets-She't. 1

Oct. 20, 1925.

L. A. PALEY MOLDING APPARATUS Filed'Jun 29 As Shets-Sheet 2 Oci. 20 1925.

Filed June 29, 1922 3 Sheets-Sheet 3 Patented; 0a. 20, 1925.

' UNITED STATES.

- 1,558,284 PATENT OFFICE.

LEWIS A. PALEY, OF BUFFALO, NEW YORK.

MOLDING APPARATUS.

Application filed June 29, 1922. Serial No. 571,646.

To all whom it may concern:

Be it known that I, LEWIS A. PALEY, a

citizen of the United States, and a resident,

of Bufialo, county of Erie, and State of New York, have invented a new and Improved Molding Apparatus, of which the following is a full, clear, and exact description.

This invention relates to an apparatus for molding substances which are liquid when.

. until the mass is thoroughly mixed, runningthe hot, mixed soap into frames, allowing theseframes to cool naturally for several days, stripping the sides away, cutting the block into slabs, cutting the slabs into cakes, drying the cakes for several hours,-

stamping on the inscriptions, and wrapping and packing the cakes. This manufacturing process requires at least three weeks from the crutcher to the shipping box, requires a large amount of labor, produces low quality cakes having a poor appearance, these cakes often beingheterogeneous due to segregation of the filling materials, produces from 10% to 50% scrapsoap which must be remelted and reworked at additional expense, requires a large amount of capital to be tied up in soap stock during the process, and produces'cakes which are not uniform in'weight or quality. Numerous attempts have been made-to overcome one or more of these manufacturing disadvantages but nothing has proved very successful commercially.

I have discovered that Whensoap is supercooled below the normal temperature of 25 (1., it loses its stickiness and becomes relatively hard so that it -may be readily stamped with an inscription without the soap sticking to the dies. Thus the present process of drying to produce a non-sticky skin for the purpose of stamping, is unnecessary as stickiness can be eliminated by super-cooling. I have also found that when the molds are made preferably by die-cast ing of a metal such as a high aluminum alloy contalnlng a small percentageof silicon to prevent corrosion and the surfaces of the molds in contact with the soap are polished, the resulting soap cake has a very high polish, smooth surface and fine appearance.

In order to secure a high capacity in cakes per minute, it is desirable to havethe cakes cool on both reaches of the chain. Cakes'are usually approximately as thick as they are wide and it is therefore desirable to have the cakes on the chain with their shortest edge parallel to the chain. so that the maximumnumber of cakes are in the cooling chamber at one time," thus securing a high capacity in cakes per minute by I speeding up the chain, but still maintaining the required cooling time. It is also desirable to have the air in the refrigeration chamber very cold and moving with a high velocity so that the cooling of the soap is rapid, and it is economical to use direct ex pansion ammonia in the cooling chamber as a refrigerating medium. 4

An object of the invention therefore is toeliminate the present manufacturing steps of framing stripping, slabbing, cutting, remelting, and drying with the accompanying expensive apparatus, labor, time, scrap and floor space. y

A-nother object of'this invention is to improve the quality of soap as to color, homogeneity, smoothness of surface, polish, freedom-from air bubbles, uniform weight and low specific gravity.

Another object of this invention is to provide a molding .machine which will readily mold cakes of irregular shape.

A further object of this invention is to produce a molding apparatus so arranged that the cakes have their shortest edges par-. allel to the chain and travel in both reaches of the chain through a refrigeration chamber having air at alow temperature movingat a high velocity so as to secure the max1-' mum capacity in cakes per minute.

A 'still further object of this invention is to mold the inscription on two opposite faces of the cakes so that a stamping mecha nism is unnecessary for many grades ofsoaps.

Reference is to be had to the accompanyline4-4of Figure 2.

ejector on the line 11-11 of .Figure 10.

feed

Figure 1' is a top view of the molding apparatus or. machine with the ho per of the feed box andthe top of. the reiiigeration :hamber removed to disclose the construcion.

Figure 2 is a central sectional .view through the feed box.

Fi ure 3 is a sectional view through the x on the line 33 of Figure 1.

Flgure 4 is a sectional view through the chain of molds adjacent the feed box on the .Figure 5'is a. sectional view through the feed box on the line 5-5 of Figure 2 Figure 6 is a sectional view through the refrigeration chamber on the' line 66 of Fi re 1.

igure 7 is aside elevation of one end of the molding machine.

Figure 8 is a perspective view of one of the molds. Q 5

Figure 9 is a portion of a modified chain 05 molds for making cakes of irregular s ape.

Figure 10 is a sectional view, through the ejector on the line 1010 of Figure 7. Figure 11 is a sectional-view through the Figure12 is a side elevation of one end of one form of the molding machine showing a wheel in place for stamping the upper surface of the cakes.

Figure 13 is a top view of a modified form ofejector and molds.

Figure 141s aside elevation of the ejector .-and the mold shown in'Figure 13.

Referring to the accompanying drawings by numerals, '20 indicates a chain of molds which passes around a sprocket wheel 21 and a 'wheel or roller 22. The axes ofsaid wheel and roller are vertical. so that the chain of molds has preferably two reaches which move in a horizontal plane. The two reaches of the chain of molds are sup orted and slide on suitable steel framewor such as angle strips 23, these angle strips being supported atone end by vertical standards 24 which are connected by cross brace 25. The's rocket wheel 21 issecured to a vertical s aft 26 which in turn is rotatably mounted in an upper bearing 27 and a lower step bearing 28. A bevel gear 29 is secured to the shaft 26 and a bevel pinion 30 secured to 'a'shaft 31, meshes with the gear 29 so that when any sultable power means, such as .an electric motor not shown, causes the rotation of the 'shaft 31, the sprocket wheel 21 will be ro-' tated and the chain' of molds 20- will be moved with a continuous motion.

The molds' which compose the chain 20 are of any desired shape to receive hot liquid soap or other substanceswhich upon cooling,

form small solidified-cakes of the substance.

In order to introduce the hot liquid soa into the molds, the chain 20 passes throu the feed box 42 which is provided with a hopper 43 adapted to receive the hot soap from any source such as the crutcher or mixing ma- I maximum number of molds will be contained on a chaln of glven length thus mak- .ing possible a high speed of the chain with a glven cooling time and a resulting high capacity in cakes per minute. 1

Each mold is substantially Z-shaped in, cross section (Fig. 8), with a dividing wall 32 between adjacent cakes, an end wall 33 extending at right angles from the wall 32 and an end wall 34 also extending at right angles-to the wall 32 but oppositely disposed .to the wall 33. The bottom 35 of the mold extends between the walls 32 and 33 at right angles to same,.so that the two edges ofthe cake are formed by walls 33 and 34, the two faces of the cake by wall 32 and one end of the cake by wall 35, the upper end of the cake being open to the air. AnlIlSCIlPtlOIl' 36 is formed on both surfaces of the wall 32 so that an imprint of the inscription is molded on opposite surfaces of the solidified cakes. In-order to link the molds-together, inner pin journals 37 and outer pin journals 38 are formed on the outer, face of the wall 34, each pair of journals being connected togethe and to said wall 34 by oblique ,web 39. It is een that when the molds are placed together, the inner journals 37 on any mold will fit snugly between the outer journals of the adjacent mold so as to hingedly connect the moldsto form the endless chain 20.

The feed box 42 has side walls 42, a vertical rear wall 44 and an oblique front wall '45 sloping in, the direction of motion of the molds. so as to forcethe soap downwardly into the molds. Outstanding flanges 45 'on the side walls 42 are fastened to similar outstanding flanges 46 on a U- shaped bottom 47 of the feed box, by bolts 48. [It-is desired'to form a seal between the side walls 42 of the feed. box andthe moving mold chain so that'no leakage of soap. will take place around the chain and for this purpose a rider 49 is slidably mounted in slot 50 in each side wall 42, said rider being adapted to slide on top of the outer walls of the chain formed by the mold 'walls 33 and 34. An upwardly extending shoulder 51 on one end of each rider engages the rear wall 44' of the Eteed'box so as to pre: vent the forward movement of the rider with the mold chain. A. similar shoulder 52 'is formed on the other end of each rider 49, saidslioulders 51 and 52 extending upwardly intoslots 53 in spring cylinders 54 and 55 respectively, said cylinders being formed on the side walls 42. These spring 0 linders contain internalsp'ring's 56 which brce plungers 57 downwardly against the shoulders 51 and 52 so that said riders will be yieldingly pressed against the mold walls of the moving chain 20. A wing 58 1s slidably mounted on top of the mold chain back of the rear wall 44 and between t e rear spring cylinders 54 "so that the soap is prevented from flowing rearwardly under the wall 44 as the mold chain moves.

A scraper carrier 59 having dO\L--ttt1l6d edges 60, is slidably mounted in similarlyshaped dove-tailed grooves 61, formed on the oblique wall 45'. A flexible scraper 62 is secured to the carrier 59 by screws 63 so that said scraper is in a position to scrape oif the excess soap from the molds as. the chain moves. It is desired to have the scraper 62 movable with relation to the molds so that the thickness of the soap delivered to the molds can be varied slightly so that the desired weight of cake is obtained. For this purpose an outstanding flange 64 is formed on the carrier 59 and a similar flange 65 is formed on the wall 45. -A spindle 66 is rotatably mounted in the flange 65 and the. end of said spindle is provided with threads 67 so as to engage a tappedhole in the flange .64. The s indie 66 is prevented from axial movement y an annular shoulder 68 formed on said spindle between its end and an adjusting head 69 secured .to the end of said spindle. By rotating the head 69, the carrier and the scraper 62 may be moved rela-' tive to the molds. In order to fix the car-' rier 59 any adjusted position, a set bolt 70 passes through a slot 71 in said carrier and is screwed to the wall 45.

It is desirable to have the temperature of the molds considerably below normal when they receive the hot liquid soap as under these conditions, the sticking of the result; ing cakes to the molds is largel eliminated.

- However, when the molds'are co (1 when they receive the" hot soap, a layer of semi-solidi-' fied soap forms on the topof the mold walls 32 and this layer is not usually removed by the scraper 62. Therefore in order to removethis layer of soap left b said scraper, a wing 72 is slidably mounte on top of the mold chain ahead of said scraper and a laterally extending knife edge-7 3 is formed on the bottom of said win%, this knife edge being ad'aptedt-o trim o the soap from the top of the mold walls. This wing 72 is prevented from moving forwardly with the mold chain, by lugs 74 extending inwardly from the side walls 42 of the feed box.

,In order to press the wing 72 downwardly on the mold chain, an arch 7 5-is formed between the two sides 42 of the-feed box, and an adjusting screw 76 with an adjusting head 77, passes through said arch, the lower end of saidscreW bearing on an arcuate spring 7 Swhich in turn rests on the wing 72 being held in position by means of lugs scraper 62, scrapes oil the excess soap on top of the molds, the riders 49 form a seal with the mold .chain so that no leakageaof soap takes place and the knife edge =73 scrapes off any semi-solidified soap fromthe top of the mold walls 32. The wing 7 2 also serves to prevent any flow of unusually soft soap under the scraper 62 as the mold chain moves.

After the chain of molds receives its charge of hot soap, it passes through the endwall 80 of a cooling chamber 81, said chamber having an end wall 82 opposite the wall 80. The angle strips 23 pass into the cooling chamberbeing supported therein by suitable cross framework 83, said angles forming the tracks which support the two" gitudinally from. the jend 80 to within] a short distance of the end 82 of said chamber. A duct opens into the chamber on one side of the baffle 84 and duct'86 opens into the chamber on the other side of said bafile.

The two ducts 85 and 86 lead to a blower 87 which is provided with shaft88 and a pulley 89 which may be rotated by any suitable power means not shown, such as an electric motor. This blower causes the air to circulate rapidly in the chamber 81 in a closed circuit in the direction of the arrows along each reach of the chain.

Any suitable cooling means may be used to maintain this moving air at a low temperature so that the soap is rapidly cooled and solidified to form cakes. Preferably the cooling system consists in a plurality of pipe coils 90 supportedin said chamber by means of brackets 91. These coils have an inlet pipe 92 and anoutlet pipe 93 which connect them to 'a standard refrigeration e uipment not shown. .Any cooling medlum may" be passed through these pipes and it is preferred to usedlrect expansion 7ammoniaalthough brine or other cooling fi'u'id may be used. The refrigeration chamber 81 is preferably insulated with a layer 7 5 l2 and covered with a thin layer of Portland of pressed cork 94 secured to said chamber cementplaster 95 secured. to the cork by expanded metal,,.-n ot shown. cakes arrive at the wheel 22 they will have a solidified skin of soap entirely surround- When the ing a somewhat soft center and as the molds around the cold pipes 90 will melt and drop to the bottom 96 of the refrigeration chamber in the form of waterfwhen the machine is -stopped. This bottom 96 slopes downwardly from the bafile'to each side of the chamber and a drain pipe 97 leads downwardly from .each half of the chamber, each pipe being provided with a drain cock 98 so that the water can be drawn from the chamber. In order to remove the frost from the pipes at intervals, it is desirable to allow a current of air at room temperature to be i drawn through the'chamber after stopping the compressor, thus melting the frost. For this purpose an opening isprovided in the side of the duct 85 and a door 99 is held in position by slides 100 so as to be easily removable. When this door is removed and placed crosswise in the due 'as shown by framework 25, and as the mold moves withv tion. An annular shoulder 111 is formed-on the spindle 107 so as to prevent the axial end of said spring is secured in a hole 114' in the section 113 andthe 'other'end of said, spring extendsover ;the arm 105 so, as to. normally press the pad 104 onto the end of dot and dash lines 101, the b ower is operated and room air is blown through the chamber to melt the frost.

As the molds pass around the small sprocket wheel 21, they open up sufficiently tq permit the upper end of the cake to be tipped outwardly so as to fall onto a moving endless belt 102 which carries the cake to any desired discharge .pointsuch as a standard automatic wrapping machine. In order to tip the cake outwardly, an ejector 103 covered with a soft rubber ad 104 so asnot to mar the cakes, is secure to an arm 105 which in turn is formed on a journal 106.' l The journal 106 is rotatably mounted on a spindle 107, said spindle having a section 108 of reduced diameter passing through a bearing 109 being secured thereto.

by a nut 110 screwed to the endof said secmovement of said spindle, and a spring 112 is coiled around a section 113 of said spindle extending beyond the shoulder -.111. One

the cakes of soap.

The bearing 109 is secured by. bolts .115 to the pad 104 bearing against theycake; the

upper end of the cake 1s tipped outwardly and eventually falls onto the endless belt 102. In order to limit the downward movement of the ejector under the action of spring 112, an outstanding lug 116 is formed on the journal 106 and said lug is so positioned that in the lowermost predetermined position of the ejector, it engages a similar lug 117 formed on the bearing 109 so as to prevent any further downward movement of said ejector. In order to lift the ejector over the mold walls 32 as the molds move, a dog 118 is formed on the end of the arm 105 extended, said dog having an oblique surface '119 which engages said mold wall 32 so as to raise said dog and ejector as the mold chain moves. The endless belt 102is supported at its lower end by a pulley 120 and suitable deflectors 121 supported bybrackets 122 cause the cakes to fal onto said belt 102. Pulley 120 is mounted on a shaft 123 which in turn is mounted in bearing 124 secured to a suitable cross brace 125.

In the modified form shown in Fig. 12, a

mechanismis shown for pressin the top or 7 end of the cake. This may be esirable for special grades of soap where the ends are not deemed smooth enough after being scraped oil by the scraper 62. It may be also desirable to stamp advertising inscri tions or other characters on the end oft e cake andif so, letters may be formed on the bottom 35 of the mold so as to also mold an advertising inscription on the opposite end of the cake. The mechanism consists in a wheel 126 having dies 127 arranged around its periphery, the hub of this wheel being secured to a shaft, 128. This shaft is rotatably mounted in slots 129 formed in bearings 130 so that a slight vertical movement is possible by the wheel 126.. The bearings 130 are secured to vertical standards 131 which in turn are secured to the steel angle strips 23. If desired, inscriptions may be formed on the, dies 127 so that said inscriptions are stamped on the ends of the cakes.

It is preferable but not necessary to have the dies 127 cooled down to a low temperature so that they will not stick to thesoap and for-this purpose a pipe 132 conducts cold air from any suitable source such as the refrigeration chamber and causes said to prevent sticking it is also preferable to moisten the to surface of the cakes with acetic acid an a tank 133 containing this acid is secured to the feed box wall 42. A pipe 134 is provided with a cock 135 and opensjust above the molds so as to drop the acid slowly onto the cakes.

13 and 14, analternative way of ejecting the cakes is illustrated. In this form the molds are reversed so that the outer mold wall 136 precedes thewall137 of'the mold. The axis of the spindle138 on which journal 139 is rotatably mounted, is placed vertically.

In the modified form shown in Figures 6 air to blow against the dies 127. r In order One end 140 of this spindleis fixed to a bearing 141 by nut 142 and an arm 143 extends outwardly from said journal. An ejector 144 extends downwardly from the arm 143 and is covered with a soft rubber pad 145 so as not to mar the cakes of soap. A dog 146 is formed on the end of the arm 143 so that the mold wall 136 engaged said dog 146 to raise the ejector 144 up over said mold wall and release it so that said pad 145 engages the edge of the cake of soap 147 in order to cause said cake to be pulled out of the mold as the mold chain moves. A spring 148 is coiled around the journal 139, one end 149 engaging the bearing 141 and the other end 150engaging the arm 143 so as to always cause said pad 145'to be pressed securely and yie'ldingly against the cake 147. A lug 151 secured to the journal 139 engages a similar lug 152 formed on the bearing 141 in order to limit the inward movement of the arm 143 under the action of the spring 148. In Figure 9, molds for making cakes of octagon shape are shown and it will be seen that this shape may be varied to suit conditions.

In operation soap from the crutcher flows into the hopper 43 and then into the feed box 42'. The mold chain 20 passes. through the feed box and the molds are filled with hotsoap which is pressed downwardly by the oblique wall 45 and scraped off level by the flexible scraper 62 Riders 49 pressed downwardly by springs 56, onto the outer mold walls, make a seal with the moving mold chain so that no leakage of soap takes place. Knife edge 73 scrapes the soap off clean from the top of the mold walls and wings 72 and 58 prevent a flow of unusually soft soap under scraper 62 and wall 44 respectively. By rotating the head 69 after loosening set bolt 70, the scraper 62 is adjusted at different heights relative to the moving molds so that the length of the cake can be varied.

After filling with soap the chain of molds passes into the cooling chamber 81 where a rapid current of cold air is circulated around the baflie 84 alongthe two reaches of the chain and two ducts' 85 and 86 and blbwer 87 so as to flow in a closed circuit. The refrigeration pipes 90 keep the air very cold so that a rapid cooling of the soap is obtained. The molds carry an inscription which cause imprints of the inscription to be molded on opposite faces of the cakes. As the molds open up while passingv around the sprocket wheel 21, the dog 118 raises up the ejector 103' clear of the mold wall '32 and then drops the pad 104 under the action of.

- the spring 112 onto the cake of soap 147 causing said cake to be tipped outwardly as the mold chain moves. The cakes ejected fromthe mold are deposited by the deflector 121 onto an endless-belt 102 which carries them to any convenient discharge point such as a standard automatic wrapping machine. In the modification shown in Fig. 12,

a wheel 126 with dies 127 around its periph ery, rolls on the mold chain so as to modify the shape of the upper end of the cakes or press an inscription on said'ends. Cold air blowing through the pipe 132 keeps said dies cold so that no sticking of the soap takes so as to engage the side of the cake and the molds" are reversed with the wall 136 placed ahead of the wall 137.

I would state in conclusion that while the illustrated examples constitute a practical embodiment of my invention, I do not limit myself strictly to the details herein illustrated since manifestly the same can be considerably varied without departing from the spirit of the invention as defined in the appended claims.

Having thus described my invention, I claim as new and desire to secure by Letters Patent:

1. In a molding machine, an endless chain of molds adapted to move entirely in a substantially horizontal plane, means for introducing a hot, liquid substance into said molds, means for cooling said substance to form cakes, and means for ejecting the cakes from the molds.

2. In a molding machine, an endless chain of movable molds adapted to move in a substantially horizontal plane and to receive a hot, liquid substance,means for cooling said fllbstance to form cakes, inscriptions formed on each mold adapted to mold an imprint of an inscription on op osite faces of each cake, and means the molds.

3. In a molding machine, an endless chain of movable molds, each mold. being Z- shaped in cross section, means for introducing a hot, liquid substance into said molds, means for cooling and solidifying said substance to form cakes, said molds being for ejecting. the cakes from adapted to partially free the cakes from the chain of molds, and means for completely ejecting the cakes from the molds.

4. In a molding machine, a series of molds ada ted to receive a hot, liquid substance, sai molds beingadapted to move in a substantially horizontal lane, means for cool- I in said substance toorm cakes, said molds belng adapted to partially open to partially eject the cakes, and means for completely ejecting the cakes from the molds.

5. In a molding machine, an endless chain of molds adapted to receive a hot, liquid substance and move entirely in a substantially horizontal plane, said chain having a pluing a hot, liquid substance into said molds,

move in said chamber around said p1pe and i substance to form cakes, and means for 'to be ejected from the molds, and means to cakes, yieldingly held means adapted to en- 1 t e mold'walls' rality of reaches, means for causin air to said molds and expose surfaces of the cakes,

flow along a reach of said chain an return and yieldingly held means adapted to enin a closed circuit, means for cooling said gage cake surfaces so as to eject said cakes air so'as to solidify said substance to form from said molds. cakes, and means for ejecting the cakes from 12. In a molding. machine, a series of the molds. f molds adapted to move in a substantially 6. In a molding machine, an endless chain horizontal plane, lmeans for introducing a of molds having-a plurality of reachesf'and hot, liqu'i substance into said molds, yieldadapted to move in a substantially horizon ingly hel elements between said introductal plane, means for introducing a hot, liquid ing means and said moving molds adapted substance into said molds on one reach of said chain and causing the substance to also 0r ooling aid' substance to form cakes, travel on a second reach of said chain, means and m ans for ejecting the cakes from the for cooling and solidifying said substance to molds; i form cakes, and means for ejectingthe cakes 13, In a devic of the class described, an from the molds. i element Z-shaped in cross section adapted 7. Ina molding machine, an endless chain to be joined to other similar elements to of molds adapted to move entirely in a subform an endless chain of molds for the restar'itiallyhorizontal p ane, eans fo troception and solidifieationiof a hot. liquid ducing a hot liquid Su s nc in o Said substance to form cakes of the substance, molds, means for cooling said substance to id olds b ing adapted to aid in the ejecr cak a die ad pted o p ess isu f cei tion of the cakes from the molds. of said cakes, said die being adaptedto 14. In a molding machine, an element move with said chain While .the die is in adapted to be joined to other similar elecmitact wi h Said Cake, nd m ns f r j ments to form an endless chain ofmolds for illg he Cakes fr m h H I the reception of a hot, liquid substance, 8- III 'm l ing machine, a container meansfor cooling said substance to form receiving a hot, liquid substance, an endless, cakes, an i i ti f d on a h elechain of molds adapted to move entirely in t ada te d to imultaneously mold an ima substantially horizontal plane through int; of aid inscription on opposite faces said container, so as to fill the mo-lds'with f id ak and means for ejecting the the substance, adjustable means associated Cakes f o th mold with said container for varying the amount 15 In a molding machine, an element of substance delivered to said molds, means dapted to be joined to other similar elefQI OO IiIIg i substance 0 form Cakes, and ments to form an endless chain of molds for means for j i g the Cakes from thenwldsthe reception? of a hot, liquid substance,

9 111 a m I IIg machlne, a cooling ChaITF means. for cooling said substance to form her, an endless chain of molds adapted to k an i i ti formed on each ele- IIIOW in su an y horizontal P151116 ment adapted to simultaneously mold an imthrough sa1d Chamber, means for intrqduci print of said inscription on opposite faces of a pipe in said chamber adapted to contain 0 said cakes, andmeans for ejecting the cakes a cooling medium, meansfor caus ng a rto from the molds.

said chain so as to cool and solidify said h fi f ld d t d t move ti l i the .same horizontal plane and to pass around a'pluralitv" of wheels, means for introducing a hot. liquid substance into said chaln f m l molds adapted to recqlve molds, means for cooling said substance to hquld substance: for coollng form cakes, said molds being provided with t Substance to form f i sa1d molds a surface adapted to support the semi-solidiing adapted to move entirely around a Wheel so as to open and expose surfaces of said ejecting the cakes fromthe molds.

10. In a molding machine, an endless "s'aid wheels. and means cakes from the molds. Q

17. In a molding machine, an endless chain of molds adapted to move in a subgage cake surfaces so as to causejsaid' cakes cause said ejecting means to selectively enage h cake surfaces Without ng ralitv of reaches, means for introducing a hot, liquid substanceinto said molds, means molding machine, an, endless for cooling at least two reaches of said chain chain of molds adapted to receive a hot, so as t lidif id b t c t f rm liquld substance and move 1n a substantially horizontal plane, means for cooling the subcakes. and means for ejecting the cakes from the molds. stance to form cakes, means for causing sa1d 13 I va ldi hi an dl 16. In a molding machine, an endless molds to move around a wheel so as to open chain of moldsadapted'to move entirely in to prevent leakage of said substance, means said cake, means'for pressing a surface of i gfied cakesas said molds pass around one of for ejecting the stantially horizontal plane and having a plua substantially horizontal plane and receive a hot, liquid substance, means for cooling said substance to form cakes, amovable endless conveyor, and means for ejecting the cakes from the molds and depositing said cakes on said conveyor. j

19. Ina molding machine, an endless chain of moldsadapted to move entirely in a substantially horizontal plane and receive a hot, liquid substancefmeans for cooling said substance to form cakes, a wheel havinc dies arranged around its peripheryand adapted to rollon the chain so that the dies press one surface of each cake, and means for ejecting the cakes from the molds.

20. In a molding machine, an endless chain of molds adapted to move entirely in a substantially horizontal plane and receive a hot, liquid substance, means for cooling said substance to form cakes, said cakes having their shortest edges parallel to the chain, and means for ejecting the cakes from the molds. i

21. In a moldin machine, a plurality of mold sections su stantially Z-shaped in cross-section'and adapted to be connected to form closed molds forthe reception of a plastic substance, means for introducing the plastic substance into said molds so as to form a cake. of the substance having the shape of the mold, and means for ejecting the cake from the mold.

22. In a molding machine, a plurality of mold sections substantially Z-shaped in cross-section and adapted to be connected to form a mold for the reception of a hot,

liquid substance, means for introducing the substance into said mold, means for cooling said mold and substance so as to forma solid cake the shape of the mold, and means for ejecting the cake from the mold.

23. In a molding machine, an endless.

chain of mold sections substantially Z- shaped in cross-section and cooperating one with another to form a series of molds, means for introducing a plastic substance into said molds so as to form cakes of the substance the shape of the molds, and means for ejecting, the cakes from the molds.

241.111 a molding machine, an endless chain of molds adapted to more entirely in a substantially horizontal plane, means for introducing a plastic substance into said molds to form cakes of the substance, and means for ejecting the' cakes from the molds.

25. In a molding machine, an endless chain ofmolds adapted .to move entirely in a substantially horizontal plane, means for introducing plastic substance into said molds so as to form cakes the shape of the mold, means for subjecting said cakes to pressure While in said molds, and means for ejecting the cakes from the molds.

26. In. a molding machine, an endless chain of molds adapted to move entirely in a substantially horizontal plane, means for introducing a hot, liquid substance into said molds, means for cooling said substance so as to form cakes the shape of the mold, a die adapted'to travel with the molds for a selected distance-and" press against a--sur- I "-face of a cake during the movement of the cake so as to modifythe shape of a surface of said cake, "and means for ejecting the cakes from the molds.

'27. In a molding machine, an endless d chain of molds adapted tomove entirely in a substantially horizontal plane, means for introducing a hot, liquid substance into said molds, means for cooling said substance to form cakes the shape of the molds, a series of dies adapted to travel with the molds and press a pattern on a surface of the cakes during the movement of the molds and cakes, andmeans for ejecting the cakes from the molds.

LEWIS PALEY, 

